Motion in a Plane 1

Very good! That's how simple vector components are! Again, the angle must be with the +x-axis. So, the angle is \(150+90=240^{\circ}\)

Let us say that a vector \(\vec{A}\) has an x-component of \(5\) and a y-component of \(7\). We can write this as \(A_x = 5, A_y = 7\). We can also write this as \(\vec{A} = 5 \hat{i} + 7 \hat{j}\).

\(\hat{i}\) means that the number multiplying it is the x-component and \(\hat{j}\) means that the number multiplying it is the y-component. In the next module, you will see why this notation is useful.